Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Hydrogen plasma-treated calcium fluoride (1990)
    s.l. : American Chemical Society
    Chemistry of materials 2 (1990), S. 206-208 
    Details
    ISSN: 1520-5002
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/cm00008a026
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Extensive Air Showers Associated with Discrete Astrophysical Sources (1988)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Nuclear and Particle Science 38 (1988), S. 609-657 
    Details
    ISSN: 0163-8998
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ns.38.120188.003141
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    The anisotropy of pyrolytic graphite (1973)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 6 (1973), S. 347-351 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: Two proposed expressions, I1(&phgr;) = cosm &phgr; and I2(&phgr;) = (1 + b2 sin2 )−1, for the orientation function, I(&phgr;), of pyrolytic graphites have been shown analytically to give quite different values for the Bacon anisotropy factor (BAF) for oriented materials. BAF values derived from the angle of half-maximum intensity using I1(&phgr;) are within 20% of numerically calculated values for the BAF range 10–90, whereas values obtained using I2(&phgr;) are smaller by as much as a factor of twenty. The effect of sample preparation on such measurements has been found to be negligible. Diamagnetic susceptibility measurements on the graphites investigated validated the calculated BAF values in that the derived single-crystal susceptibilities were in reasonable agreement with known values. BAF values calculated via I2(&phgr;) produced unacceptable paramagnetic values parallel to the basal plane. It is suggested that I1(&phgr;) be used for rapid BAF determinations; although numerical calculation is preferred, the difficulty of measuring I(&phgr;) at large &phgr;, for highly oriented materials, may make the full numerical procedure impracticable and this approximate procedure the more desirable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0021889873008861
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Ultra-High Resolution γ-Ray Resonance in Zinc-67 (1960)
    [s.l.] : Nature Publishing Group
    Nature 186 (1960), S. 707-708 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A search for the resonance was made using a mechanically rigid package of absorber and source, suspended by threads inside a liquid-helium cryostat. The resonance condition was destroyed by applying an external magnetic field to the absorber but not the source, making use of the nuclear Zeeman ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/186707a0
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    The GRANDE detector
    Amsterdam : Elsevier
    Nuclear Physics B (Proceedings Supplements) 14 (1990), S. 125-142 
    Details
    ISSN: 0920-5632
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0920-5632(90)90409-N
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Preoperative staging of irradiated rectal cancers using digital rectal examination, computed tomography, endorectal ultrasound, and magnetic resonance imaging does not accurately predict T0,N0 pathology (1997)
    Springer
    Diseases of the colon & rectum 40 (1997), S. 140-144 
    Details
    ISSN: 1530-0358
    Keywords: Rectal cancer ; Computed tomography ; Radiotherapy ; Endorectal ultrasound ; Staging ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract PURPOSE: The postradiation preoperative staging results of 25 patients with rectal cancer who were found to have Stage T0,N0 lesions after surgery were examined. Our aim was to assess the ability of preoperative staging following radiation therapy to predict the absence of disease. METHODS: From 1983 to 1994, 25 patients treated with preoperative radiation therapy for biopsy-proven rectal cancer were found to have no pathologic evidence of disease in the resected specimen (T0,N0). The preoperative postradiation disease staging results of these patients were compared with the postoperative pathologic findings. Each patient received 4,500 to 5,580 cGy during a five-week to six-week period, and four patients had preoperative chemotherapy. Surgical resection was performed six to eight weeks after completion of radiation therapy. All 25 patients were staged by digital rectal examination before surgery. In addition, 13 patients were assessed using computed tomography, 6 by endorectal ultrasound, and 1 by magnetic resonance imaging. RESULTS: Most irradiated lesions were overstaged by radiologic assessment and physical examination. No technique could reliably distinguish between postradiation fibrosis and residual cancer. The negative predictive value for digital rectal examination was 24 percent. Computed tomography accurately staged 23 percent of lesions, and endorectal ultrasound predicted 17 percent of lesions correctly. The single patient evaluated by magnetic resonance imaging was overstaged and thought to have a T2 lesion. CONCLUSIONS: Our ability to assess local eradication of rectal cancer following radiation therapy remains poor. Conventional imaging and clinical examination techniques are unable to safely predict which patients do not require surgical excision following curative radiation therapy for rectal cancer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02054977
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Cellulose derived composites – A new method for materials processing (1997)
    Springer
    Materials research innovations 1 (1997), S. 137-144 
    Details
    ISSN: 1433-075X
    Keywords: Key words Wood ; Composites ; Ceramics ; Carbon/carbon ; Carbon/epoxy ; Porous carbons ; Lignocellulosics ; Processing ; Net-shape
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract  This research demonstrated for the first time a method for producing net shape polymer, ceramic and carbon composites using wood as a precursor. The conversion of wood to carbon has been practiced for centuries but the controlled thermal decomposition to form a monolithic carbon to be used as a template for composites as demonstrated by this research is a unique discovery. This was accomplished by thermal decomposition of wood under controlled conditions to produce a crack-free porous carbon monolith which was readily shaped by conventional methods. The shaped carbons have converted to carbon/polymer composites, carbon/carbon composites, ceramics, and ceramic composites without significant changes in dimensions. This research has demonstrated that composites derived from wood can eliminate several expensive processing steps. Specifically, no fiber lay-up or powder consolidation is required, and final grinding and polishing steps are minimized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100190050031
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    facet.materialart.
    Unknown
    "The Ethnic Origins of Nations", by Anthony D. Smith (Book Review) (1990)
    New Brunswick, N.J. : Periodicals Archive Online (PAO)
    Journal of American Ethnic History. 9:2 (1990:Spring) 100 
    Details
    ISSN: 0278-5927
    Topics: English, American Studies , Ethnic Sciences , History
    Notes: REVIEWS
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:h169-1990-009-02-000008
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Dietary preferences of the opisthobranch mollusc Stylocheilus longicauda for secondary metabolites produced by the tropical cyanobacterium Lyngbya majuscula (1998)
    Springer
    Marine biology 132 (1998), S. 267-273 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Pure compounds isolated from the cyanobacterium Lyngbya majuscula Gomont were evaluated in an artificial diet for their influence on the feeding preferences of the sea hare Stylocheilus longicauda (Quoy and Gaimard, 1824), which lives in and feeds on this filamentous cyanobacterium (blue-green alga). Microcolin B, ypaoamide, malyngolide and other natural products acted as feeding deterrents at natural concentrations. At lower concentrations, sea hares were indifferent to ypaoamide and malyngolide in their diets. In contrast, barbamide stimulated sea hare feeding at the concentrations normally found in L. majuscula. Malyngamides and majusculamides, the most common natural products found in samples of L. majuscula from Guam, increased sea hare feeding at low concentrations and inhibited feeding at the higher concentrations that occurred in some collections of L. majuscula. Dietary selection of cyanobacteria by S. longicauda may be regulated by the concentration of specific chemical cues produced by L. majuscula.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002270050392
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    The pterin lumazine inhibits growth of methanogens and methane formation (1996)
    Springer
    Archives of microbiology 166 (1996), S. 136-140 
    Details
    ISSN: 1432-072X
    Keywords: Key words Archaea ; Methanogens ; Methanogenesis ; Lumazine ; 2 ; 4-(1H ; 3H)-Pteridinedione ; Methyl-coenzyme M ; Bacteriocidal compounds
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The pterin compound lumazine [2, 4-(1H, 3H)-pteridinedione] inhibited the growth of several methanogenic archaea completely at a concentration of ≤ 0.6 mM and was bacteriocidal for Methanobacterium thermoautotrophicum strain Marburg. In contrast, growth of two non-methanogenic archaea, several eubacteria, and one eukaryote was not strongly affected at much higher concentrations. In washed-cell suspensions, methanogenesis from H2 and CO2 by Mb. thermoautotrophicum or from H2 and methanol by Methanosarcina barkeri was inhibited by addition of lumazine. In cell-free extracts of Mb. thermoautotrophicum, H2-driven methane production from CO2 or CH3-S-CoM was completely inhibited by 0.6 mM lumazine. The results suggest that the compound may be useful in probing the methanogenesis pathway or in selecting against methanogens.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002030050368
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...